Par is more important than total lumens...a 100k lumen bulb could outperform a 150k bulb if the par is higher...

a general rule is mh for veg and hps for flower as the blue promotes stem/leaves and the hps promotes bud/flower

hps throughout the grow is decent

hps with enhanced or wide spectrum (added blue) is better

mh for veg and hps for flower is better still

and the best is both mh and hps throughout....ie 400mh and 600hps

I've used a 400w hps hortilux bulb with great results so if you are only going to use one light I'd recommend a wide spectrum hps :jointsmile: